Substance resembling india-rubber.



UNITED STATES Patented December 15, 1903.

PATENT OFFICE.

'S'UBSTANCE RESEMBLING INDIA-RUBBER.

SPECIFICATION forming part of Letters Patent No. 746,688, dated December15, 1903.

Application filed May 13, 1903 Serial No. 156,982 (No Specimens.) 7'

T0 aZZ whom it may concern:

Be it known that I, DANIEL HENRI DUPONT- FRANKLIN, a citizen of theFrench Republic, residing in the city, county, and State of New York,have invented a certain new and useful Substance ResemblingIndia-Rubber, of which the following is a full, clear, and exactspecification.

My invention comprises a substance resemblin g indiarubber.

In a copending application filed May 13,

, 1903, Serial No. 156,983, I have described and claimed the method ofproducing said substance and in my present application lay claim to saidsubstance itself.

The substance herein referred to consists of a mixture of a hydrocarbonand an acid, said mixture being supplied with a proper amount of oxygen.

Various hydrocarbons and acids may be employed in producing thesubstance aforementioned; but as a specific example I refer to asubstance which is composed of one hundred parts of coal-tar,twenty-five parts of boracic acid and a suitable quantity of oxygen.

Having now described my invention, what I claim as new, and desire tosecure by Letters

